T-slot plate industrial measuring tools in one, mainly to fix the workpiece, is fitter workers used to debug the equipment, the basic work of the assembly platform equipment, maintenance equipment. T-slot plate precision: according to national standard verification procedures to perform, is divided into four grades 0,1,2,3. T-slot plate size: 500 × 800-2000 × 4000, (The products are produced according to customer drawings or agreed process of production and processing, users can request the size and weight of the production). T-slot plate qualification 1, T-slot plate should not have the appearance of defects in the work surface rust, scratches, bumps and other effects used. 2, T-slot plate work surface should not have sand holes, pores, cracks, slag and shrinkage and other casting defects. Each sand casting surface should be completely removed, and the surface smooth, solid paint, each duty shall be rounded blunt edge. 3, T-slots on opposite sides of the surface of the plate, the installation should be set up, threaded cylindrical bore hole or the handle or lifting position. Should be set up to consider lifting position to minimize the distortion caused due to lifting. 4, T-slot plate should be treated by the stability and demagnetization. 5, T-slot plate and working face and the side adjacent to the vertical sides of tolerance is 12 (according to GB1184-80 "shape position tolerance" provision). 6, T-slot plate face HB170-220 or hardness should be between 187-255. 7, T-slot plate main test item A, material and surface hardness. B, shape position tolerance, including the nominal size, squareness tolerances. C, appearance. D, flatness. E, contact spots. F, plane fluctuation. G, Face permitted deflection. H, surface roughness. 8, precision parameter.级 3 T-slot plate unspecified contact pattern requirements. A flat spots require contact number less than 20 points in any 25 × 25mm plane. Two flat spots require contact number less than 12 points in any 25 × 25mm plane.